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Article

Phase Angle as a Marker of Muscular Strength in Breast Cancer Survivors

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Exercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Lisboa, Portugal
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Physiology and Biochemistry of Exercise Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade Lisboa, 1499-002 Lisboa, Portugal
3
ScienceCircle-Scientific and Biomedical Consulting, 1600 544 Lisboa, Portugal
4
Department for Life Quality Studies, University of Bologna, 47921 Rimini, Italy
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Department of Biomedical and Neuromotor Science, University of Bologna, 40126 Bologna, Italy
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(12), 4452; https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17124452
Received: 22 May 2020 / Revised: 15 June 2020 / Accepted: 18 June 2020 / Published: 21 June 2020
Background: accurate prognostic tools are relevant for decision-making in cancer care. Objective measures, such as bioelectrical impedance (BI), have the potential to improve prognostic accuracy for these patients. This cross-sectional study aimed to investigate whether phase angle (PhA) derived from the electrical properties of the body tissues is a predictor of muscular strength in breast cancer survivors (BCS). Methods: a total of 41 BCS (age 54.6 ± 9.2 years) were evaluated. PhA, obtained at frequency 50 kHz, was assessed with BI spectroscopy, and muscular strength with a handgrip dynamometer. Moderate-to-vigorous physical activity (MVPA) was assessed using the International Physical Activity Questionnaire (IPAQ). Measurements were performed in the morning after an overnight fast. Results: linear regression analysis showed that PhA accounted for 22% (r2 = 0.22) of muscular strength variance. PhA remained a borderline predictor of muscular strength variance independently of age and MVPA. Conclusions: the findings of this study suggest that PhA is a significant predictor of maximal forearm isometric strength and a potential indicator of disease-related functionality in BCS. View Full-Text
Keywords: body composition; breast cancer; bioimpedance; handgrip strength body composition; breast cancer; bioimpedance; handgrip strength
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MDPI and ACS Style

Matias, C.N.; Cavaco-Silva, J.; Reis, M.; Campa, F.; Toselli, S.; Sardinha, L.; Silva, A.M. Phase Angle as a Marker of Muscular Strength in Breast Cancer Survivors. Int. J. Environ. Res. Public Health 2020, 17, 4452. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17124452

AMA Style

Matias CN, Cavaco-Silva J, Reis M, Campa F, Toselli S, Sardinha L, Silva AM. Phase Angle as a Marker of Muscular Strength in Breast Cancer Survivors. International Journal of Environmental Research and Public Health. 2020; 17(12):4452. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17124452

Chicago/Turabian Style

Matias, Catarina N., Joana Cavaco-Silva, Mafalda Reis, Francesco Campa, Stefania Toselli, Luís Sardinha, and Analiza M. Silva 2020. "Phase Angle as a Marker of Muscular Strength in Breast Cancer Survivors" International Journal of Environmental Research and Public Health 17, no. 12: 4452. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17124452

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